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Finding the Fourth Proportional to 143,810.51, 215,715.76 and 43,970.70

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Solution

The fourth proportional to 143,810.51, 215,715.76 and 43,970.70 is: 65,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,810.51 : 215,715.76 = 43,970.70 : x
  2. Step 2: Convert to fraction form
    143,810.51/215,715.76 = 43,970.70/x
  3. Step 3: Cross multiply
    143,810.51x = 215,715.76 × 43,970.70
  4. Step 4: Simplify right side
    143,810.51x = 9,485,172,968.23
  5. Step 5: Solve for x
    x = 9,485,172,968.23/143,810.51
  6. Step 6: Final answer
    x = 65,956.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.